So, finally tonight, have you been following it? A lot of people arguing about a new "Jeopardy!" Champion who seems to have used science to unlock a kind of secret to winning. So, in "Jeopardy!" Style, the question is, he has everyone talking? The answer is, who is Arthur Chu. ABC's linsey Davis. Reporter: Here's the clue. He's won almost $103,000 so far. But his unusual game strategy has diehard "Jeopardy!" Fans in a tizzy. Arthur has command of the board. Reporter: The correct answer, who is Arthur Chu? After Chu's four wins, a flurry of tweets. Like, this is the face of a "Jeopardy!" Villain. And no respect for "Jeopardy!" Tradition. So, what is Chu's unusual method? Let's take game strategy for $400. While the typical contestant often sticks with one category and goes from top-to-bottom, Chu jumps around the board, keeping his opponents guessing and one step behind. He also hunts down the daily doubles. Getting nautical." Reporter: Typically found in the bottom two rows, keeping them for himself, even if he doesn't know the answer. He bets just 5 bucks. That's the strategy of the game, trying to deny your opponents to score on you. Reporter: Some call him a hero, a mad genius. While he could have been cut throat, just $1. He did this. Interesting wager. That takes you to $26,800. We have a tie. Reporter: And we may have someone who has finally cracked the code of America's favorite quiz show. Linsey Davis, ABC news,

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